package com.gulimall.order.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

/**
 * feign远程调用丢失请求头问题,feign会调用拦截器增强请求的
 */
@Configuration
public class GuliFeignConfig {
    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor(){
        return new RequestInterceptor(){
            @Override
            public void apply(RequestTemplate template) {
                //拿到请求数据
                ServletRequestAttributes attributes = (ServletRequestAttributes)RequestContextHolder.getRequestAttributes();
                if (attributes!=null){
                    HttpServletRequest request = attributes.getRequest();
                    if (request != null){
                        //同步请求头数据
                        String cookie = request.getHeader("Cookie");
                        template.header("Cookie",cookie);
                    }
                }


            }
        };
    }











}
